Breakthrough Look Book

Climate Tech has Arrived

Check out our portfolio companies, Fellows, and Catalyst projects, and meet the innovators who are carving the path to a clean energy future.

ESS Inc.

Company Description

ESS Inc. designs, builds and deploys environmentally sustainable, low-cost, iron flow batteries for long-duration commercial and utility-scale energy storage applications requiring from 4 to 12 hours of flexible energy capacity. The Energy Warehouse™ and Energy Center™ use earth-abundant iron, salt, and water for the electrolyte, resulting in an environmentally benign, long-life energy storage solution for the world’s renewable energy infrastructure. Established in 2011, ESS Inc. enables project developers, utilities, and commercial and industrial facility owners to make the transition to more flexible, non-lithium-ion storage that is better suited for the grid and the environment.

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Company Description Sector Program Technology
44.01 CO2 to X Offering permanent CO2 storage solutions using the natural power of mineralization Manufacturing Ventures CO2 to X View details
75F Sensors 75F uses smart sensors and controls to make commercial buildings more healthy, efficient, and comfortable than ever before Buildings Ventures Sensors View details
Aeroseal Leak-Sealing & Insulation Shrinking carbon emissions in the built environment with air-sealing technologies for HVAC ductwork and building envelopes Buildings Ventures Leak-Sealing & Insulation View details
Aikido Technologies Renewables Aikido Technologies has designed a self-erecting platform for floating, offshore wind turbines to overcome key barriers to increasing offshore wind energy production Electricity Fellows Renewables View details
Airloom Wind Turbines Transforming wind energy through low-cost, infinitely flexible systems Electricity Ventures Wind Turbines View details
Albedo Aerial Monitoring Aerial quality imagery — from space Agriculture Ventures Aerial Monitoring View details
Alpine Bio Food & Beverage Alternatives Alpine Bio is on a mission to transform plants into the world's most regenerative ingredient factories, bringing their first protein Casein to market via tastings in 2025 Agriculture Ventures Food & Beverage Alternatives View details
Aluminio Renewables Aluminio is developing a new approach to using aluminum to replace the silver used on solar cells, reducing the costs and accelerating adoption of more efficient cell designs Electricity Fellows Renewables View details
Antora Energy Thermal Energy Storage Electrifying heavy industry with zero-carbon heat and power Electricity Ventures Thermal Energy Storage View details
Arculus Solutions Hydrogen Arculus Solutions is future-proofing current natural gas transmission pipelines to safely transport hydrogen Manufacturing Fellows Hydrogen View details
Arinna Renewables Arinna is empowering humans and machines with abundant solar energy via its paper-thin power-dense solar panel technology.  Electricity Fellows Renewables View details
ArkeaBio Methane ArkeaBio™ is an ag-biotech start-up developing a vaccine solution to significantly decrease methane emissions from ruminant animals globally Agriculture Ventures Methane View details
Arnergy Storage Replacing fossil fuel generators with modularized solar +lithium ion storage systems in emerging markets Electricity Ventures Storage View details
Aspiring Materials Carbon Removal Aspiring Materials is tackling industrial CO2 emissions from two angles - what goes in and what comes out. And we’re using commonly found rocks to do it Manufacturing Fellows Carbon Removal View details
Barocal Heating and Cooling Barocal is revolutionizing cooling and heating with a breakthrough solid-state technology that offers very high energy efficiency without harmful refrigerant gases. Buildings Fellows Heating and Cooling View details
Baseload Capital Heat Power Investing in a sustainable future by developing heat power plants worldwide Electricity Ventures Heat Power View details
BIOMILQ Food & Beverage Alternatives Giving infants the opportunity to thrive through superior cultured-breastmilk nutrition Agriculture Ventures Food & Beverage Alternatives View details
Bloom Biorenewables Biochemicals Bloom Biorenewables designs a world in which our materials and fuels are made from sustainable bio-based carbon Transportation Ventures Biochemicals View details
Blue Frontier HVAC Smart, ultra-efficient sustainable air conditioning with integral energy storage Buildings Ventures HVAC View details
Blue World Technologies Methanol Making high-temperature fuel cells that enable efficient use of electro-fuels for industries around the world Transportation Ventures Methanol View details
Boston Metal Steel Game-changing technology for steel decarbonization and sustainable metals production Manufacturing Ventures Steel View details
Brimstone Energy Cement Decarbonizing ordinary portland cement Manufacturing Ventures Cement View details
C-Zero Renewable Natural Gas Decarbonizing natural gas Manufacturing Ventures Renewable Natural Gas View details
C16 Biosciences Food & Beverage Alternatives Producing sustainable alternatives to palm oil using biotechnology Agriculture Ventures Food & Beverage Alternatives View details